Masonry fireplace with PE 'D1' super insert on main floor. Lakewood 'elk double door' in shop. Chimney sweep. SterlingSL Member. Hearth Supporter. Nov 4, 2010 60 Dallas Tx. Jan 11, 2017. Above the block off plate and up into the smoke chamber area is where I stuffed roxul on my insert. I used a long stick to push and jam it up into the smoke.. Whenever you are retrofitting a chimney to use with a wood stove, a block-off plate is necessary for sealing the fireplace opening. Also known as a damper seal, a block-off plate keeps soot from entering the hearth and protects from cold drafts. It effectively seals off a home from the chimney. Many fireplace inserts.
For all the guys that have a fireplace insert that used there stove BEFORE installing a block off platehow much difference in temps did you actually take notice to. This will be are 2nd year burnin n i had a plate made up n have enough rockwool to stuff up above plate.. The Kingsman I43LCP Block Off Plate for Lower Chase by Kingsman provides a premium installation component for use with your fireplace. This Block Off Plate for Lower Chase offers a necessary addition to your venting assembly to complete your installation safely and efficiently.